Abstract
The tapering of lithography advances that have been associated with Moore’s Law will substantially change requirements for future interconnect architectures for large-scale datacenters and HPC systems. Architectural specialization is creating new datacenter requirements such as emerging accelerator technologies for machine learning workloads and rack disaggregation strategies will push the limits of current interconnect technologies. Whereas photonic technologies are often sold on the basis of higher bandwidth and energy efficiency (e.g. lower picojoules per bit), these emerging workloads and technology trends will shift the emphasis to other metrics such as bandwidth density (as opposed to bandwidth alone) and reduced latency, and performance consistency. Such metrics cannot be accomplished with device improvements alone, but require a systems view of photonics in datacenters.
© 2019 The Author(s)
PDF ArticleMore Like This
John Shalf, George Michelogiannakis, Brian Austin, Taylor Groves, Manya Ghobadi, Larry Dennison, Tom Gray, Yiwen Shen, Min Yee Teh, Madeleine Glick, and Keren Bergman
PsW1F.5 Photonics in Switching and Computing (PS) 2020
Shuai Sun, Vikram K. Narayana, Tarek El-Ghazawi, and Volker J. Sorger
JW2A.138 CLEO: Applications and Technology (CLEO:A&T) 2017
Gerald T Marcyk
OTuC1 Optical Fabrication and Testing (OF&T) 2002